Geotropism — Ge*ot ro*pism, n. [Gr. ge a, gh^, the earth + ? to turn.] (Biol.) A disposition to turn or incline towards the earth; the influence of gravity in determining the direction of growth of an organ. [1913 Webster] Note: In plants, organs which grow… … The Collaborative International Dictionary of English

geotropism — /dʒiˈɒtrəpɪzəm/ (say jee otruhpizuhm) noun a tropism occurring in response to gravitation, as the direction of growth of plants or the ability of some animals to avoid an upside down position in the air. See negative geotropism, positive… … Australian English dictionary

geotropism — n. plant growth in relation to gravity. Phrases and idioms: negative geotropism the tendency of stems etc. to grow away from the centre of the earth. positive geotropism the tendency of roots to grow towards the centre of the earth. Derivatives:… … Useful english dictionary